Polyfluorourethane additives for curable coating compositions

Details Polyfluorourethane additives for curable coating compositions Polyfluorourethane additives for curable coating compositions

C - Chemistry, Metallurgy

08

G

C08G 18/67 (2006.01) C07C 269/02 (2006.01) C08G 18/38 (2006.01) C08G 18/80 (2006.01) C08G 18/81 (2006.01) C09D 167/06 (2006.01) C09D 167/08 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2279954

A coating composition comprising an alkyd or urethane resin and a polyfluorourethane of Formula (II) (R f-X-O-CO-NH)m-A-(NH-CO-O-R)(p-m) wherein R f is a C2-C20 linear or branched fluorocarbon, X is -(CH2)n-, -(CH2)g SO z(CH2)t-, or -SO2N(R1)CH2CH2- wherein n is 1 to about 20; g and t are each independently 1 to about 3; z is 0, 1 or 2, and R1 is an alkyl of 1 to about 4 carbon atoms; A is an aliphatic, cycloaliphatic, aromatic, or heterocyclic radical; R is a C3-C20 linear, branched, or cyclic aliphatic group containing at least one ethylenically unsaturated double bond and optionally at least one phenyl or phenyl substituted with C1-C6 alkyl or halogen; p is 2 to 3; and m is from about 0.8 to about 1.25 when p is 2, and m is from about 1 to about (p-I) when p is greater than 2 is disclosed.

L'invention concerne une composition de revêtement comprenant une résine alkyde ou uréthane et un polyfluoroéthane de formule (II): (Rf-X-O-CO-NH)m-A-(NH-CO-O-R)(p-m) dans laquelle Rf est un fluorocarbure C2-C20 linéaire ou ramifié, X représente -(CH2)n-, -(CH2)gSOz(CH2)t-, ou -SO2N(R1)CH2CH2-, n valant 1 à environ 20; g et t représentent chacun séparément 1 à environ 3; z vaut 0, 1 ou 2; et R1 représente alkyle à 1 à 4 atomes de carbone; A représente un radical aliphatique, cycloaliphatique, aromatique ou hétérocyclique; R représente un groupe C3-C20 aliphatique cyclique, linéaire ou ramifié, contenant au moins une liaison double saturée en éthylène et éventuellement au moins un phényle ou phényle substitué par halogène ou alkyle C1-C6; p vaut 2 à 3; et m vaut 0,8 à environ 1,25 lorsque p vaut 2, et m vaut environ 1 à environ (p-1) lorsque p est supérieur à 2.

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